Mug



FIG. 1 is a top view of a mug according to the present design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front elevational view thereof; the rear elevational view being a mirror image thereof;

FIG. 4 is a right side elevational view thereof; and,

FIG. 5 is a left side elevational view thereof. 

The ornamental design for a mug, as shown and described. 